It offers a journey through the history of philately, with stamps from Spain and the rest of the world from the end of the 18th century onwards; it also explores the world of telegraphy and telephony, with items from the 19th and early 20th centuries. The museum has a specialist library and various valuable original documents. Its collection includes documentation from the State School of Communications, and it has a series of documents signed by important figures, along with rare stamps, hieroglyphic letters...